Use the David suit first

"I guess we can either zip up the Dave suit and see if we get another you, or I can put it on and be another Dave," says Jessica.

"Or I can put it on and see if we re-combine into one me permanently," you say.

"Well, shouldn't you give the Dave suit some experiences first?" asks Jessica. "Maybe you can live separate lives for a while, combine into one Dave again, and remember both sets of experiences!"